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Code Issues Releases Activity

ffplay: decrease video picture queue size to 3

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It was raised to 4 because of a theoretical issue, if we ensure that we do not
return from the display function without popping one picture from the queue,
then its OK to use the old size.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2013-02-16 18:08:20 +01:00
parent 1fb52bf920
commit b764b53aae
1 changed files with 4 additions and 4 deletions
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8
ffplay.c
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@ -112,7 +112,7 @@ typedef struct PacketQueue {
SDL_cond *cond;
} PacketQueue;
#define VIDEO_PICTURE_QUEUE_SIZE 4
#define VIDEO_PICTURE_QUEUE_SIZE 3
#define SUBPICTURE_QUEUE_SIZE 4
typedef struct VideoPicture {
@ -1287,7 +1287,7 @@ static int pictq_prev_picture(VideoState *is) {
prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
if (prevvp->allocated && prevvp->serial == is->videoq.serial) {
SDL_LockMutex(is->pictq_mutex);
if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE - 1) {
if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE) {
if (--is->pictq_rindex == -1)
is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
is->pictq_size++;
@ -1368,7 +1368,7 @@ retry:
delay = compute_target_delay(is->frame_last_duration, is);
time= av_gettime()/1000000.0;
if (time < is->frame_timer + delay) {
if (time < is->frame_timer + delay && !redisplay) {
*remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
return;
}
@ -1546,7 +1546,7 @@ static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t
SDL_LockMutex(is->pictq_mutex);
/* keep the last already displayed picture in the queue */
while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 2 &&
while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 1 &&
!is->videoq.abort_request) {
SDL_CondWait(is->pictq_cond, is->pictq_mutex);
}